1  Margaretha Langermann (9 May bet 1592 and 1594 Hamburg, Germany – 1655)   +  Johann David Gronow ( – 27 Jul 1631 Hamburg, Germany)      2  Johann Friedrich Gronow (5 Sep 1611 Hamburg, Germany – 28 Dec 1671 Leyden, Holland)         +  Adelheid Tennulius ( – 1657)            3  Geographer Jacob Gronow (20 Oct 1645 Deventer – 21 Oct 1716 Leyden, Holland)               +  (Name Unknown)                  4  MD/Botanist Johann Friedrich Gronow (1690 – 1760)                     +  (Name Unknown)                        5  Lorenz Theodor Gronow (1730 – 1777 Leyden, Holland)                  4  Abraham Gronow             3  Lawyer Lorenz Theodor Gronow (abt 1645 – )         +  Katharina Glagow       2  Lorenz Gronow (abt 1612 Hamburg, Germany – 6 Nov 1680)